Cooking apparatus



(N0 Modl.)

' E. ATKINSON. GOOKING APPARATUS.

No. 424,949. Patented Apr. 1890.

a, Fi :2.

Tana cm, vNGYci-Ln'mL, wummmu, n. :4

UNITED STATES PATENT OFFICE.

EDWARD ATKINSON, or BRooKLINE, MASSACHUSETTS.

COOKING APPARATUS.

SPECIFICATION formingpart of Letters Patent No. 424,949, dated April 8, 1890.

Application filed $epte1nber 18, 1888. Serial No. 285,687. (No model.)

To all whom it may concern: the said ovens being constructed as will be Be it known that I, EDWARD ATKINSON, of hereinafter specifically described.

Brookline, county of Norfolk, State of Massa- My invention consists in a cooking appachusetts, have invented an Improvement in ratus composed of an outer oven constructed Cooking Apparatus, of which the following of a substance or material that is essentially description, in connection with the accoma non-conductor of heat to prevent loss of panying drawings, is a specification, like letheat by radiation, and capable of Withstandters on the drawings representing like parts. ing heat, and having an inlet and an outlet This invention has for its object to provide for heat, combined with an inner oven arm a novel apparatus in which food may be ranged within the outer oven and separated 6o cooked in the most Wholesome and nutritious therefrom on all sides by a clear space, so as manner at a minimum expense. to be completely enveloped in a heated at- In order that food may be cooked in the mosphere, all as Iwill proceed now more parmost wholesome and nutritious way it is necticularly to set forth and finally claim.

I5 essary that the heat required in the process Figure 1 is a vertical section of a cooking of cooking should be under ready control and apparatus embodying my invention, the base should be so applied that it may be mainof the lamp or heat-generator being omitted tained uniformly, not so hot as to burn the to save space in the drawings; and Fig. 2, a food, not so hot as to vaporize the more volahorizontal section of the oven shown in Fig.

20 tile portions of the fats or juices of meats, 1 on line 00 0c. 7 yet hot enough to thoroughly cook the food. The outer oven or casing a is made of non- In practice Ifind that bread and meat may metallic material sufficiently non-heat-conbe most thoroughly and nutritiously cooked ducting to prevent the escape of heat from at degrees of heat ranging from 180 to 300 within through its walls and sufficiently in- 2 5 Fahrenheit,a longer time at a comparatively combustible to resist the degree of heat neclow temperature more than compensating for essary for cooking. the intensity of heat which is customarily The Walls of the outer oven a may be made applied in what is called a quick oven. It of wood pulp or other pulp alone, preferably is also desirable when the heat is solely emindurated fiber, or combined with a non-com- 0 ployed for cooking the food rather than for bustible substance, such as asbestus, carheating the room in which the oven is placed bonate of magnesia, &c.; or, if desired, the that the said heat should be concentrated said walls may be made of slabs of wood upon the vessels containing the food with the treated with a solution of zinc or in any other least possible waste and in the most uniform manner to prevent combustion at the degree 3 5 manner at the top, bottom, and sides of the of heat required for cooking. said vessel, radiation from the fuel when be- The use of metal for the outer oven is careing applied to cooking or from the outside of fully avoided, especially on the outer side, the oven in which the vessels containing the except when the wallsare made of slabs, in food to be cooked are placed working awaste which case the said slabs may be bound or 40 of heat so far as its application to the cook securely fastened together at theircorners by 0 ing is concerned. metal strips to.

In order that the heat may be concentrated The bottom of the outer oven is provided upon the vessels containing the food, and also with a hole c through which is conveyed the that there may be no communication between heat from a lamp, gas-burner, or other gener- 4 5 the heat-generator and the oven in which the ator. food is placed, lest the products of combus- The outer oven contains within it the inner tion should injure the food, my improved oven b,which may and preferably will be of cooking apparatus is composed of an inner sheet metal, the said inner oven being of such oven,in which the food is placed, and an outer size and being supported upon suitable legs 50 oven, within which the inner oven is located, I) to leave a space 12 for the circulation of I00 heat around it, the said space surrounding the said inner oven on all sides, so that the said inner oven maybe completely enveloped in a heated atmosphere, as clearly shown in Figs. 1 and 2.

The outer and inner ovens will be provided with suitable doors Zr b.

To prevent injury or burning out of the bottom of the inner oven, and also to deflect or diffuse the heat entering through the hole a a slab U, preferably of soapstone, is interposed between the inner and outer ovens above the hole, the said slab protecting the bottom ofthc inner oven and preventing food immediately over the hole from being burned or scorched.

The top of the outer oven is provided with a hole or opening clor the escape of the waste heat, the inner oven being rel'erably provided with a chimney or ventilator (1, extended up through the said o 'iening.

.In order to avoid waste oi heat, the outer surface of the outer oven is made non-nurtallie, whereby outward radiation is prevtm'ted. In this manner I am enabled to perform a large amount of cooking with a minimum expenditure of heat.

I claim 1. In a cooking apparatus, an outer oven constructed of a substance or material thatis essentially a nonconductor of heat, and so as to prevent loss of heat by radiation, and capable oi. withstanding heat, and having an inlet and an outlet forheat, combined with an inner oven arranged within the outer oven and separated therefrom on all sides by a clear space for the passage of heat and the products of eoml 1 ustion, it at 1y, substantially as described.

In a cooking apparatus, an outer oven constructed of indurated fiber capable oi. withstanding heat and resisting loss of heat by radiation, and having an inlet and an outlet for heat, combined with a metallic oven arranged within the outer oven and enough smaller than it to afford a space wholly surrounding the inner oven and constituting a heatirig-chamber, snbstmltially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

E'DXVARI) A'IKINSUN.

Vii nesses:

.Ias. ll. ()IiUruu-nnn, I It HYARD F. 'EA'roN. 

